SpiroKu is the brightly coloured, stackable, nestable sensory toy with unique shaped pieces that can be stacked and arranged any way you want. Once the pieces are stacked together it stretches out into a long tower that measures 55cm long. With 9 vibrantly coloured pieces made from BPA free plastic, SpiroKu encourages fine motor skills and cause and effect whilst inspiring hours of tactile discovery. Product features: Unique stacking cylinders that stretch into a tall tower 22 inches tall when fully extended Encourages fine motor skills, spatial reasoning, experimentation, creativity Nest them together, pull on the smallest cylinder to stretch it into a tower Includes: 9x vibrantly coloured cylinders in different sized BPA free Suitable for ages 3 years +